14 piece, cobalt metal drill bit set, sets consists of: 1/16″, 5/64″, 3/32″, 7/64″, (2) 1/8″, 9/64″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16″, 3/8″ & 1/2″ bits, manufactured from cobalt for drilling in hard & abrasive materials, no-skate tip for clean & accurate starts, 3 flat shank promotes better grip on bits 3/16″& larger, designed for very high drilling temperatures for superior performance in stainless steel, high visibility marking provide clearly marked diameter.